Table 3.

Signs of Riata ST Optim and Durata failure. A lead may have had more than one sign of failure

Sign	PG can abrasion	Other device abrasion	Internal abrasion	Unspecified abrasion	Other abrasion
Death, truncated shock		1
High-voltage short during VF					DF-1 cable and SVC coil melted
Low impedance	5		3	3	Clavicle-2
Inappropriate shocks	4	3		3	Clavicle-1
Oversensing, noise	6	1	2	4	Fracture-1
Low R-wave	1	1		1
‘Break’				1	Clavicle-1
High impedance					Clavicle-1
Loss of capture, rising threshold	1				Annuloplasty ring-1
Unspecified	4	3		3